Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Tsunami review reinforces need for public preparedness

Media release, 30 September 2013

Tsunami review reinforces need for public preparedness

The Review of Tsunami Hazard in New Zealand (2013 Update), released today, reinforces the need for the public to understand and be prepared to respond to the threat of a tsunami.

Summary of the three key points arising from the review:

-  The probability of a tsunami has not changed but the maximum possible size of a tsunami in some areas has increased.

-  A large tsunami generated very close to New Zealand would arrive before an official warning could be issued or sirens activated. People must know that if they are at the coast and feel a strong earthquake (it is hard to stand up) or a weak earthquake that lasts for a minute or more, then get to high ground or go inland. Do not wait for an official warning.

-  Councils are responsible for warning communities and developing local plans.

The main areas where tsunami caused by local and regional sources pose a greater hazard than previously understood include:

-  the coasts of Northland, the north-west part of the Auckland region, Great Barrier Island, the Coromandel Peninsula, and the Bay of Plenty;

-  the East Cape of the North Island, and parts of the Wairarapa coast

-  Southland, Stewart Island, Fiordland and Westland.

Resulting from the review, the Ministry of Civil Defence and Emergency Management will be:

-  Emphasising the existing public messages about tsunami

http://www.civildefence.govt.nz/memwebsite.nsf/Files/Tsunami-national-signage/$file/tsunami-brochure-final.pdf

-  Encouraging councils and the 16 regional CDEM Groups to reinforce the national public messages with more specific local and regional information.

-  In October and November, with GNS Science, holding regional seminars for CDEM Groups and other response agencies. The seminars will be a chance to clarify the review and discuss matters related to tsunami warnings, including public preparedness and alerting.

The Director of Civil Defence Emergency Management, John Hamilton, said the Ministry commissioned GNS Science to carry out the review to update research published in 2005.

The review shows the maximum possible size of some local and regional tsunami is bigger than previously understood, though tsunami are no more likely. (A tsunami from a local earthquake would arrive in less than one hour, and that from a regional earthquake would arrive in one to three hours.)

This is because there is now more uncertainty about the maximum possible size of earthquakes on plate boundaries near those areas.

The review considers “return periods” of up to 2,500 years. That is, what is the biggest tsunami that can be expected in such a period?

The review incorporates research on the 2004 Indian Ocean, 2009 South Pacific, and 2011 Tohoku (Japan) tsunamis. All were produced by earthquakes substantially larger than had been considered likely at those locations. There are now believed to be fewer restrictions on maximum magnitudes of earthquakes that could be created on tectonic plate boundaries. New scientific models take into account this increased uncertainty about the maximum possible size of earthquakes.

It is now also known there was a similar tsunami in Japan in AD 869. This indicates the interval between the biggest earthquakes there is over 1,000 years.

The tectonic plates in Japan are converging twice as fast as those around New Zealand, which suggests the interval between the largest earthquakes on our local plate boundaries could be more than 2,000 years.

However, New Zealand has only a brief historical record of 200 years, which is not long enough to provide accurate reported information. During that time the country has experienced about 10 tsunami of 5 metres or more.

Download from www.civildefence.govt.nz

Review of Tsunami Hazard in New Zealand (2013 Update)

-  Maps showing the regional differences between the 2005 and 2013 reviews.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

"New Faces, Wise Heads": Andrew Little Announces New Labour Line Up

Labour Leader Andrew Little today announced a bold new caucus line up which brings forward new talent and draws on the party’s depth of experience.

“Labour has many new and highly capable MPs who will have the opportunity to prove their ability. At the same time our senior hands will be on deck to take the fight to the National-led Government and support our upcoming stars,” Andrew Little says.

“I am pleased to announce Annette King will be my deputy for the coming year. In recent weeks she has shown how crucial her wisdom and strength is to Labour. More>>

 

Parliament Today:

Gordon Campbell: On Rick Ellis As Te Papa’s New CEO

The recent appointment of former TVNZ boss Rick Ellis to head Te Papa has copped a fair bit of criticism. Much of it has been inspired by the suspicion that Ellis has been hired to pursue the same purely commercial goals as he did at TVNZ, while similarly neglecting the serious cultural side of his mandate. More>>

Passport Cancellation, Surveillance: Draft 'Foreign Fighters Legislation' Released

The final draft of the Countering Terrorist Fighters Legislation Bill contains proposals previously announced by Mr Key in a major national security speech earlier this month. More>>

ALSO:

Related

Joint Statement: Establishment Of NZ-China Strategic Partnership

At the invitation of Governor-General Lt Gen The Rt Hon Sir Jerry Mateparae and Prime Minister The Rt Hon John Key of New Zealand, President Xi Jinping of the People’s Republic of China made a state visit to New Zealand from 19 to 21 November 2014... More>>

ALSO:


Savings Targets: Health Procurement Plan Changes Direction

Next steps in implementing DHB shared services programme Health Minister Jonathan Coleman says the Government has agreed to explore a proposal put forward by DHBs to move implementation of the shared services programme to a DHB-owned vehicle. More>>

ALSO:

More on Health Policy:

Auckland Unification: 'No IT Cost Blowout' (Just More Expensive)

Following discussion of an update on Auckland Council’s Information Services Transformational Programme at today’s Finance and Performance Committee, council has released the report publicly. More>>

ALSO:

Other Expensive Things:

Gordon Campbell: On The SAS Role Against Islamic State, And Podemos

Only 25% of the US bombing runs are even managing to locate IS targets worth bombing. As the NYT explains at length, this underlines the need for better on-the-ground intelligence to direct the air campaign to where the bad guys have holed up... More>>

ALSO:

Public Service: Commission Calls For Answers On Handling Of CERA Harassment

EEO Commissioner Dr Jackie Blue is deeply concerned about the way in which the State Services Commission has handled sexual allegations made against CERA chief executive Roger Sutton this week and is calling for answers. More>>

ALSO:

Gordon Campbell:
On Andrew Little’s Victory

So Andrew Little has won the leadership – by the narrowest possible margin – from Grant Robertson, and has already been depicted by commentators as being simultaneously (a) the creature of the trade unions and (b) the most centrist of the four candidates, which would be an interesting trick to see someone try in a game of Twister. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news